WO2009097773A1 - Système de transmission de puissance et procédé pour réguler la puissance de sortie et équipement mécanique pour celui-ci - Google Patents

Système de transmission de puissance et procédé pour réguler la puissance de sortie et équipement mécanique pour celui-ci Download PDF

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Publication number
WO2009097773A1
WO2009097773A1 PCT/CN2009/070160 CN2009070160W WO2009097773A1 WO 2009097773 A1 WO2009097773 A1 WO 2009097773A1 CN 2009070160 W CN2009070160 W CN 2009070160W WO 2009097773 A1 WO2009097773 A1 WO 2009097773A1
Authority
WO
WIPO (PCT)
Prior art keywords
transmission
gear position
engine
control valve
power
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2009/070160
Other languages
English (en)
Chinese (zh)
Inventor
Lu Dong
Bangwei Qi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Caterpillar Inc
Original Assignee
Caterpillar Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Caterpillar Inc filed Critical Caterpillar Inc
Publication of WO2009097773A1 publication Critical patent/WO2009097773A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/20—Drives; Control devices
    • E02F9/202—Mechanical transmission, e.g. clutches, gears
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/20—Drives; Control devices
    • E02F9/2058—Electric or electro-mechanical or mechanical control devices of vehicle sub-units
    • E02F9/2079—Control of mechanical transmission
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H59/00—Control inputs to control units of change-speed- or reversing-gearings for conveying rotary motion
    • F16H59/02—Selector apparatus
    • F16H59/08—Range selector apparatus
    • F16H59/10—Range selector apparatus comprising levers
    • F16H59/105—Range selector apparatus comprising levers consisting of electrical switches or sensors

Definitions

  • the present invention generally relates to vehicles, particularly construction machinery, such as graders. More specifically, the present invention relates to a powertrain of a vehicle. Furthermore, the invention relates to a method of actively regulating the output power of a powertrain system. Background technique
  • the power of the engine needs to be adjusted to suit the needs of different gear positions. Specifically, when the vehicle is moving forward and the transmission is in a higher gear position, it is required to output a relatively small torque, for example, when the vehicle climbs and When the transmission is in the lower gear, it is necessary to have the engine output a relatively large torque in order to have sufficient driving force. For example, in the case of earth moving machinery, it is desirable that the engine produces a torque that is significantly greater when the transmission is in the lower first gear (bull operation) than when the transmission is in the higher 2, 3 (forward gear) The generated torque is used to perform the dozing work with a larger thrust in the lower first gear. However, in order to adjust the engine power so that the torque generated by the engine can be accurately changed according to the gear position of the transmission, it is necessary to make the engine know the gear position information of the transmission.
  • the present invention is directed to solving the above problems in the prior art. Summary of the invention
  • the object of the present invention is to provide a power transmission system in which the cost control can be used to actively adjust the engine transmission according to the gear position information of the transmission.
  • the present invention provides a power transmission system with adjustable output power, the system including an engine with an electronic control module and a transmission unit coupled to the engine, the transmission unit including an associated gear transmission and a mechanical transmission A control valve, wherein the transmission unit further includes detection means capable of detecting a gear position of the transmission and transmitting the detection result to an engine electronic control module, the electronic control module adjusting an output power of the engine according to the detected gear position.
  • the invention provides a construction machine comprising a power transmission system as described above.
  • the present invention also provides a method of actively adjusting an output power of a power transmission system including a transmission unit and an engine, the method comprising the steps of: detecting a gear position of the transmission via a mechanical transmission control valve of the transmission unit; The detected gear position adjusts the output power of the engine.
  • the powertrain system according to the present invention has the ability to actively adjust the output power of the engine in accordance with the gear position of the transmission, particularly the low gear position, thereby reliably ensuring that a predetermined torque is generated at the gear position.
  • FIG. 1 shows a perspective view of an exemplary work machine
  • Figure 2 is a perspective view showing a transmission unit of the power transmission system of the present invention.
  • Fig. 3 shows a view of a portion A of Fig. 2, in which an exemplary embodiment of the gear position detecting device is shown. detailed description
  • the power transmission system of the working machine 100 includes an engine 9 and a transmission unit 1 matched with the engine, wherein
  • the motive 9 has an electronic control module 91 for, for example, regulating its output power
  • the transmission unit 1 is a valve group, for example, a combination of a pressure regulating valve, a speed valve, a directional valve, and a safety valve.
  • the speed valve in the control valve is connected to different passages through the operating lever to obtain different gear positions.
  • the operation 3 ⁇ 4 100 may be, but is not limited to, earth moving machines such as graders and bulldozers.
  • a transmission unit 1 of a powertrain system in accordance with the present invention, which may include a gear shift 2 disposed within a transmission housing, and a transmission that interacts with the gear shifter 2 to effect shifting Control valve 3.
  • the transmission control valve 3 has a speed spool 31 projecting from its valve body, which can be translated relative to the valve body of the transmission control valve 3 when the transmission is shifted.
  • the speed spool 31 when the work machine is in the dozing operation state, that is, when the transmission is in the lower first gear, the speed spool 31 will move outward relative to the valve body of the transmission control valve 3 to an extended position; and when the work machine is in the forward direction In the transport state, that is, when the transmission is in the higher 2nd and 3rd gears, the speed spool 31 will return from the extended position.
  • a gear position detecting device is provided on the transmission control valve 3, and the detecting device is configured to enable the electronic control module 91 to adjust the output power of the engine 9 in accordance with the gear position of the transmission 1.
  • the gear position detecting device includes a stroke switch 4 disposed on a valve body of the transmission control valve 3, the stroke switch 4 being disposed such that its link 41 faces the speed spool 31 And the speed spool 31 can be brought into contact with it when it protrudes outward.
  • the gear position detecting means further includes means for communicating the travel switch 4 with the electronic control module 91 of the engine 9, such as a wire (shown schematically in phantom in Figure 1).
  • the plate 5 places a travel switch 4 on the valve body of the transmission control valve 3, wherein the mounting plate 5 is fixed to the valve body of the transmission control valve 3 by bolts 61, 62.
  • the ampere is fixed to the valve body by means of the existing threaded holes in the valve body of the transmission control valve 3, that is to say, the mounting plate 5 is provided with a thread on the valve body of the transmission control valve. Through hole corresponding to the hole, bolt 61, 62 pass through the through hole and the corresponding threaded hole on the transmission control valve body.
  • the gear position detecting means is constituted by the stroke switch 4 in the above exemplary embodiment, the present invention is not limited thereto.
  • a contact switch can be used to implement the gear position detection function, and even a common reed pair set to a normally open position can be used to implement the gear position detection function.
  • an infrared transmitter and receiver may be provided on the transmission control valve 3 to form a gear position detecting device.
  • the gear position detecting device can also be used to detect other gear positions other than the first gear. According to the concept of the present invention, it is also possible to simultaneously detect information of a plurality of gear positions by using the improved scheme of the gear position detecting device.
  • the transmission when the working machine is normally traveling for transportation work, the transmission is in the second gear or the third gear, and the speed spool 31 is away from the travel switch 4, the engine output power P 2 or P 3 , and the torque is generated. T 2 or T 3 .
  • the operator When the working machine is to be engaged in the dozing operation, the operator operates the shift lever so that the transmission is in the lower first gear. At this time, the speed spool 31 will move out to contact the travel switch 4, especially in contact with the connection.
  • the lever 41 then the travel switch 4 sends a signal to the electronic control module of the engine such that the engine outputs a predetermined power ⁇ under the control of its electronic control module, wherein the predetermined power Pi ensures that the generated torque 1 is significantly greater than the second gear Or torque T 2 or T 3 in 3rd gear. In this way, it is ensured that the working machine has an appropriate large pulling rod pulling force during the dozing operation.
  • the power transmission system can also be designed such that the engine can output a predetermined power according to a higher gear position.
  • the stroke switch 4 can be designed to send a signal to the engine control module when the speed valve core 31 is not touched, or The engine control module can be designed to control the engine to output a predetermined power when the signal of the travel switch 4 is not received.
  • the working machine not only has an appropriate traction force when the transmission is in the first gear, but also can improve the transportation efficiency at the 2nd and 3rd gears, thereby greatly improving the work efficiency of the work machine.
  • the solution of the invention intelligently realizes the automatic identification of the transmission gear position without adversely affecting the existing power transmission system, and thereby realizes the automatic adjustment of the engine output power, and realizes the engine output at a low cost. Active control of torque. It should be noted that the present invention is not limited to the exemplary embodiments described above, and various changes and modifications may be made by those skilled in the art without departing from the scope of the invention. The technical features of the present invention can be made in any possible combination.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Control Of Transmission Device (AREA)

Abstract

L'invention porte sur un système de transmission de puissance, pour réguler une sortie de puissance, qui comprend un moteur (9) avec un module de commande électronique (91), et une unité de transmission (1) couplée au moteur (9). L'unité de transmission (1) comprend une boîte de vitesse (2) et une soupape de commande de boîte de vitesse mécanique (3) associée à la boîte de vitesse (2), l'unité de transmission (1) comprenant également un dispositif de détection (4) qui peut détecter les positions de changement de vitesse de la boîte de vitesse (2) et transmettre les résultats détectés au module de commande électronique (91) de façon à réguler la puissance de sortie du moteur (9) sur la base des résultats détectés. L'invention porte également sur un équipement mécanique comprenant le système de transmission de puissance et sur un procédé pour réguler de façon active la sortie de puissance de ce système de transmission de puissance.
PCT/CN2009/070160 2008-01-31 2009-01-15 Système de transmission de puissance et procédé pour réguler la puissance de sortie et équipement mécanique pour celui-ci Ceased WO2009097773A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN200810008951.8 2008-01-31
CNA2008100089518A CN101498366A (zh) 2008-01-31 2008-01-31 输出功率可调的动力传动系统、方法及其工程机械

Publications (1)

Publication Number Publication Date
WO2009097773A1 true WO2009097773A1 (fr) 2009-08-13

Family

ID=40945572

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2009/070160 Ceased WO2009097773A1 (fr) 2008-01-31 2009-01-15 Système de transmission de puissance et procédé pour réguler la puissance de sortie et équipement mécanique pour celui-ci

Country Status (2)

Country Link
CN (1) CN101498366A (fr)
WO (1) WO2009097773A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4338832A (en) * 1980-02-11 1982-07-13 Twin Disc, Incorporated System for shiftable multi-speed hydraulically operated power transmission and electronic controller therein
US4429196A (en) * 1980-10-04 1984-01-31 Zahnradfabrik Friedrichshafen Ag Reversing switch for motor vehicle transmission
DE4320591A1 (de) * 1993-06-22 1995-01-05 Burgess Gmbh Schaltvorrichtung zur Anordnung im Bereich eines Bedienungshebels
US6722219B2 (en) * 1999-07-14 2004-04-20 Luk Lamellen Und Kupplungsbau Beteiligungs Kg Transmission, shiftable in a track pattern
CN1670405A (zh) * 2004-03-19 2005-09-21 丰田自动车株式会社 用于自动变速器的液压控制设备

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4338832A (en) * 1980-02-11 1982-07-13 Twin Disc, Incorporated System for shiftable multi-speed hydraulically operated power transmission and electronic controller therein
US4429196A (en) * 1980-10-04 1984-01-31 Zahnradfabrik Friedrichshafen Ag Reversing switch for motor vehicle transmission
DE4320591A1 (de) * 1993-06-22 1995-01-05 Burgess Gmbh Schaltvorrichtung zur Anordnung im Bereich eines Bedienungshebels
US6722219B2 (en) * 1999-07-14 2004-04-20 Luk Lamellen Und Kupplungsbau Beteiligungs Kg Transmission, shiftable in a track pattern
CN1670405A (zh) * 2004-03-19 2005-09-21 丰田自动车株式会社 用于自动变速器的液压控制设备

Also Published As

Publication number Publication date
CN101498366A (zh) 2009-08-05

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